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# Re: CRC

- Date: Tue, 13 Feb 1996 10:58:01 PST
- From:
- CC: moo-cows@parc.xerox.com
- In-reply-to: <199602131839.NAA00620@mailbox.syr.edu> (mcmudge@mailbox.syr.edu)

    >>>>> "Kipp" == Kipp the Kidd <mcmudge@mailbox.syr.edu> writes:

        >> It is faster in that the real work is only done once at the
        >> origin of the data.  It is an information theoretic convolution
        >> of the inforation, so that a given CRC is capable of detecting
        >> N bits in error.  For the purpose here, it is unlikeley that to
        >> nearly similar MOOs would have the same CRC and the same size
        >> and the same filedate.  I would not trust the CRC alone to tell
        >> me they were the same -- it is more of a flag to say they are
        >> different in this case.  If the crc is different, the data is
        >> most certainly different.  If the crc is the same, look at
        >> other factors to be sure.

        Kipp> I was going to use this on verb code, and I doubt that 2
        Kipp> bunches of verb code would A) Be different B) BOTH
        Kipp> Compile/make sense and C) have the same CRC.  Perhaps it
        Kipp> would be best for it to work on any value though, since I
        Kipp> could do the same thing with updating properties.  You must
        Kipp> remember that the general setup for the object will remain
        Kipp> the same, and only small parts of verbs and props will
        Kipp> change.  I think that in order to make different texts with
        Kipp> a matching CRC, the texts will have to be VERY different.
        Kipp> It's not likely that I will modify the object SO much.

    You are correct in this.  If you sent a list of verb names, lengths,
    and crcs, you woould probably have a good indicator of differentness
    (is that a word?)

        Kipp> - Kipp -----BEGIN GEEK CODE BLOCK----- GCS/CC d- s+:- a16
        Kipp> C++ UL++++ P+ L++ E-? W+ !N--@ !o-- K->K++++++ w++(--) O-
        Kipp> M-- V--? PS++(+) PE(--) Y+ PGP-? t+ 5(+) X++ R+++(*) !tv b+
        Kipp> DI++++ D++++ G e* h!()(*) r+ !y+ ------END GEEK CODE

    Pardon my out-of-touchedness (that's gotta be a word :-) but what is
    with this geek code block stuff?

        Kipp> BLOCK------ -----BEGIN NOT SO GEEKY BLOCK----- MOO projects:
        Kipp> RPG Minimal.db: paradigm.microwave.com 5000 MOO2000:
        Kipp> moo.microwave.com 2000 MundoHispano: europa.syr.edu 8888
        Kipp> ------END NOT SO GEEKY BLOCK------

    --
    -----------  "...  And the men went up and viewed Ai."  [Jos 7:2]  -----------
    Robert Jay Brown III  rj@eli.wariat.org  http://eli.wariat.org  1 847 705-0370
    Elijah Laboratories Inc;  759 Independence Drive;  Suite 5;  Palatine IL 60074
    -----  M o d e l i n g   t h e   M e t h o d s   o f   t h e   M i n d  ------

References:

- Re: CRC

- From: mcmudge@mailbox.syr.edu (Kipp the Kidd)

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